/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *
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 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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#include "nsISupports.idl"
#include "nsISelectionListener.idl"
#include "nsIEnumerator.idl"

interface nsIFrameSelection;
interface nsIDOMRange;
interface nsISelectionListener;

%{C++
class nsIFrame;
class nsIPresShell;
struct nsPoint;
%}

[ptr] native nsIFrame(nsIFrame);
[ptr] native nsIPresShell(nsIPresShell);
[ref] native nsPointRef(nsPoint);

[scriptable, uuid(3225CA54-D7E1-4FF5-8EE9-091B0BFCDA1F)]
interface nsISelectionPrivate : nsISupports
 {
    const short ENDOFPRECEDINGLINE=0;
    const short STARTOFNEXTLINE=1;
    
    attribute boolean interlinePosition;

    /* startBatchChanges
       match this up with endbatchChanges. will stop ui updates while multiple selection methods are called
    */
    void  startBatchChanges();
    
    /* endBatchChanges
       match this up with startBatchChanges
    */
    void  endBatchChanges();
		
    nsIEnumerator  getEnumerator();
    wstring  toStringWithFormat(in string formatType, in unsigned long flags, in PRInt32 wrapColumn);
    void  addSelectionListener(in nsISelectionListener newListener);
    void  removeSelectionListener(in nsISelectionListener listenerToRemove);

    /* Table selection stuff
       We should probably move this and table-related 
       items in nsIFrameSelection  to a 
       new nsITableSelection interface
    */
    const long TABLESELECTION_NONE     = 0; 
    const long TABLESELECTION_CELL     = 1; 
    const long TABLESELECTION_ROW      = 2; 
    const long TABLESELECTION_COLUMN   = 3; 
    const long TABLESELECTION_TABLE    = 4; 
    const long TABLESELECTION_ALLCELLS = 5;

    /** Test if supplied range points to a single table element:
      *    Result is one of above constants. "None" means
      *    a table element isn't selected.
      */
    long getTableSelectionType(in nsIDOMRange range);
    
    /* Internal utility method to set the pres shell on a newly created selection */
    [noscript] void setPresShell(in nsIPresShell aPresShell);

    /* canCacheFrameOffset
     * Frame Offset cache can be used just during calling nsEditor::EndPlaceHolderTransaction.
     * EndPlaceHolderTransaction will give rise to reflow/refreshing view/scroll, and call times
     * of nsTextFrame::GetPointFromOffset whose return value is to be cached.
     * see bugs 35296 and 199412
     */
    [noscript] attribute boolean canCacheFrameOffset;

    /* GetCachedOffsetForFrame
     * Returns cached value for nsTextFrame::GetPointFromOffset.
     */
    [noscript] void getCachedFrameOffset(in nsIFrame aFrame, in PRInt32 inOffset, in nsPointRef aPoint);

    /* getFrameSelection
     * Returnes a reference to the frame selection associated with this selection 
     */
    [noscript] nsIFrameSelection getFrameSelection();
};

